Water heater



y 1, 1930., w. A. DALEY a,'zs9,73s

WATER HEATER Filed Nov. 11, 1927 3 Sheets- Sheet 1 Emu/0771277 July 1,1930. w, A, DALEY 1,769,735

WATER HEATER Filed Nov. 11, 1927 3 Sheets$heet 2- KII/ 26 y 1, 1930. w.A. DALEY 1,769,735

WATER HEATER Filed Nov. 11, 1927 3 Sheets-Sheet 3 atented July 1', 1930ITEFD STATES PATENT OFFICE WALTER A DALEY, OF CHICAGO, ILLINOIS,ASSIGNOR TO BELL & GOSSETT COMPANY,

OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS WATER HEATERApplication filed November 11, 1927. Serial No. 232,699.

This invention relates to improvements in water heaters and its purposeis to provide an improved heater adapted for use in conjunction withboilers and the like for heat- 5 ing water for household or domesticuse.

The principal object of the invention is to provide an improved waterheater having improved means for removin the worker object is to providea water heater comprising an improved coupling for detachably connectingthe heating coil thereto. A further object is to provide a Water heaterhaving improved means for permitting the removal of the heating coilfrom the casing thereof without disconnecting the external pipeconnections. A further object is to provide an improved coupling forwater heaters or the like. Other objects relate to various features ofconstruction and arrangement which will appear more fully hereinafter.

The nature of the invention will be understood from the followingspecification taken withthe accompanying drawings, in which oneembodiment is illustrated. In the drawings, Figure 1 shows a verticalsection of an improved water heater embodying the features of thepresent invention;

Figure 2 shows a top plan view of the heater illustrated in Fig. 1 withthe top cover thereof removed and the improved coupling shown inhorizontal section;

Figure 3 is a partial vertical section through the coupling of amodified .form of heater embodying the principles of the presentinvention;

Figure 4 is a partial vertical section through a heater casing showing amodified means of forming a fluid-tight joint;

Figure 5 is a horizontal section showing a modified connection of theheating coil with the external pipe, and

Figurej6 is a horizontal section showing still another modification ofthe connecing parts from the casing thereo Still an-' 1 0t tion betweenthe heating coil and the pipe.

In theaccompanying drawings the invention is shown as embodied in awaterheater comprising a casing 10, preferably of substantially cylindricalform, which forms the heating chamber. The casing 10 is provided with aremovable cover 11 which is detachably secured thereto by bolts or studs12 so that, upon removal of this cover, access may be had to the workingparts-which are located within the heating chamber. The side wall of thecasing 10 is provided with a boss 10 having an aperture therethroughwhich is internally threaded to be engaged by a pipe 13 through whichboiler Water, from a boiler or the like, is adapted to pass into theheating chamber. The lower wall of the casing 10 is provided with a boss14 which is internally threaded to be detachably engaged by an-outletpipe 15 through which the boiler water circulates back to the boilerwhere it is heated. Within the heating chamber of the casing 10 there ismounted a heating coil 16 made upof two helical pipes 16 and 16 whichare located one within the other end and which have their ends arrangedto communicate with the headers 17. These headers have apertures intheir walls and water-tight connections are made with the ends of thepipes 16 and 16 by brazing or other suitable connecting means. The waterwhich is to be heated for domestic purposes or the like is adapted topass into the lower end of the heating coil 16 and to circulate upwardlytherethrough being 'heated by the transfer of'heat throu h the walls ofthe'pipes 16 and 16" fromt e hot boiler water which circulates throughthe heating chamber.

The casing 10 is provided on the side thereof opposite the pipe 13 withtwo similar integrally formed hollow bosses or rojections 19, which formauxiliary casin s located adjacent the u per and lower on s of the Theseosses '19 are similar and connections are made through each of them withone end of the heating coil 16 so that it will be necessary to describein detail only one of the bosses 19 and its associated parts. Each boss19 is provided with an interior chamber 20 having a threaded opening atits upper end which is detachably engaged by the end of a pipe 21through which the water for domestic purposes is adapted to pass. Thechamber 20 communicates with the interior of the casing 10 through acircular opening 22 formed in the wall of the casing and through thisopening a connection is established with one of the head ers 17. Aroundeach of the openings 22, the wall of the casing 10 is provided with aseat 23 of rectangular shape a ainst which the rectangular end face 17"0 the header is adapted to seat and the header is provided inwardly ofthis face 17" with a,

threaded opening 24 engaged by one threaded extremity of a couplingsleeve 25. The

header extends into the rectangular recess' 23 in which the seat 23 isformed so that the rotation of the header is prevented. The openingbetween the chamber 20 and the heating chamber of the casing 10 isenlarged around the outer end of the coupling sleeve 25 to form apacking chamber 26 and an inclined annular seat-27 is formed at theinner end of each packing chamber so that when packing material 28 isforced against this inclined surface 27 it is adapte to be forcedinwardly against the outer :annular' surface of the coupling sleeve 25-to form a water-tight joint between the chamber 20 and the casing 10.The outer ortion of the ring of packin material 28 1s en aged by anannular padlring ring or glan 29 which threadedly engages the outerthreaded part of the outer extremity of the coupling sleeve 25 and whichis open at its outer end to permit water to pass therethrough into orfrom the coupling sleeve. The packing gland'29 is provided withoppositely disposed notches 29 in its outer.

end so that it may be enga ed by a wrench and the coupling sleeve 25 isprovided with notches 25 for the same pur ose. To ermit access to thecoupling or assemb ing and disconnecting the same, each boss 19 isprovided op osite the couplin sleeve 25 with a threaded opening 30 whicis normally closed by a threaded plug 31 havin a rectangular projectinghead 31 adapte to be engaged bya wrench.

' By means of the foregoing construction, the eaders 17 at the upper andlower ends of the heating coil 16 are detachably connected to the wallsof the casing 10 in such a way as to. communicate with the chambers 20of the bosses 19 and the water to be heated asses through one of thepipes 21 thence t rough one of the chambers 20 and after going throughthe heating coil 16,

passes outwardly through the other chamber 20 and the other pipe 21. Iffor any reason it is desirable to withdraw the heating coil 16 forrenewal or repair, the cover 11 of the casing 10 may be removed and theplugs 31 may be removed from the bosses 19 after which the operator maydetach the packing glands 29' and the coupling sleeves 25 and therebypermit the disconnection of the heating coil 16 from the casing 10without detaching the pipes 21 through which the water for domestic useis circulated to and from the heating device. In this way the heatingcoil may be renewed or repaired or the packing joints may be adjusted orthe packing removed without in any way disturbing the connections of thepipes 21 with the walls of the casin In Figure 3 of the drawings thereis illustrated a modified form of easing construction according to whichthe casing 35 having a detachable cover 36 is provided with a projectingboss 37 having a threaded aperture 38 therein normally closed by a plug39. This plug 39 is located opposite the openings 40 through the wall ofthe casing in which there is mounted the threaded coupling sleeve 41having connection with the header 42 of the heating coil at one end andhaving a threaded connection at the other end with the packing gland 43which serves to com press the annular ring of packing material 44. Inthis form the wall of the chamber 45 within the boss 37 is provided withanother threaded opening 46 above'the lug 39 to permit the horizontalextension 0 a pipe 47' through which the Water for domestic purposes iscirculated to or from the heating device.

A modified form of means for forming a fluid-tight joint between theheating coil and thewall of the casing is shown in Figure 4 where thecasing 50 is illustrated as having a projecting boss 51 provided with aninterior chamber 52 from which an opening .53 leads through the wall ofthe casing to the heating chamber 54 of the casing in which the heatingcoils are located. The heating coils have connected thereto the header55 which is provided with a rectangular or other non-circular portion 56arranged to project into a similarl shaped recess 57 formed in the wallof t e casing around the opening 53, the recess forming a seat 57 aroundthe o ning for-a gasket 58 which extends aroun the inwardly projectingportion 59 of the header. The header 55 has an opening within the part59 and this opening is internall threaded for detachable engagement wita packing gland 60, the outer enlarged portion 60 of which substantiallyfits the outer enlarged portion 53 of the opening 53. Within the innerpart of the opening 53 and around the reuced portion of the gland 60there is thus wearers formed an annular acking chamber in which ismounted packing material 61, some of which may extend around the annularpart 59 of the header. The wall of the packing chamber may be providedwith an annular beveled surface joining the enlarged portion 53 of theopening 53 with the reduced portion 53 which surrounds the part 59 ofthe header. The wall of the chamber 52 is provided with an opening 62adapted to be engaged by a detachable plug so that access may be had tothe packing gland 60 without detaching the pipe which en ages theopening 63 in the upper end of the c amber 52. :A similar constructionmay be emplolyed at the lower ends of the heating 001 s.

In Fig. 5 ofthe-drawings there is illustrated a modification in whichthe casing '65 has mounted therein a heating coil 66 provided with aheader 67 having a tubular nipple 68 extending therefrom into theopening which is formedin the boss 69 located on the side of the casinThe header 67 engages a seat 70 around the opening 71 which is engagedby the nipple 68. The opening 71 is enlarged outwardly from the seat 70to form a packing chamber 72 con tainingsuitable packing material whichis adapted to be compressed by a packing gland 73 having a hexagonalflange 73 which overlies the outer end of the boss69. This packing glandis adapted to be forced inwardly to compress the packing material aroundthe nipple 68 and, in the embodiment shown in Fig. 5, this isaccomplished by internally threading the gland 73 as shown at 73 so thatwhen the gland is inserted it threadedly engages the externally threadednipple 68 and thus compresses the packing material within the pac ingchamber while at the same time forcing the header'67 against its seat70. The gland 73 is also threadedly engaged by the external pipeconnection 7% s0 tat a connection to the Water supply or circulatingpipe is established directly through the gland. Qther parts of theconstruction; may be as illustrated in Fig. 1 and upon removing thegland 73 from its engagement with the nipple 68, the parts may bedisassembled.

The modification illustrated in Fig. 6 of the drawing comprises a casing7 5 having mounted therein a heating coil 76, the extremity 76* of whichextends into the opening 76 formed in the wall of the casing and throughthe boss 7 8 which is cast integrally with the wall. The outer portionof the opening 77 is enlarged. to form a packing chamber 79 in whichsuitable packing material is mounted and this enlarged portion of theopening is internally threaded as shown at 80 to be engaged by theexternally threaded packing gland 81. gland is forced inwardly itcompresses the When this i ing claims the invention is referred to as awater heater but it may of course be used to heat oil or other liquids.v

Although certain embodiments of the invention have been illustrated,.anddescribed, in the foregoing specification, it will be understood thatthe invention may be embodied in various other forms within the scope ofthe appended claims.

I claim:

1. A water heater comprising a casing having an opening in its wall, anauxiliary casing carried by said first named casing and havingcommunication therewith through said openin a heating elementterminating in a tubu ar member located in said opening, packingmaterial engaging said tubular member in said opening, and means forcompressing said packing material.

{2. A water heater comprising a casing having an opening in its wall, anauxiliary a water-tight chamber around the casing carried by said firstnamed casing and having communication therewith through said opening,aheating element 1 terminating in a tubular member located in saidopening, packing material engaging said tubular member in said opening,means for com-; pressing said packing-material, and a water pipeconnection communicating with said auxiliary casing; I

3. A water eater comprising a casing having an opening in its wall, anauxiliary casing carried by said first named casing and havingcommunication therewith through said opening, a heating element mountedin said first namedcasing and terminating in a tubular extension locatedwithin said opening, packin material vengaging said extension, an meansfor compressin said packing material around said extension.

4. A water heater comprising a casing having an opening in its wall, anauxiliary casing carried by said first named casing and havingcommunication therewith through said opening, a water pipe connectioncom,- muni'cating with said auxiliary casing, a heating element mountedin said first named casing and having a communicating mem-' berprojecting into said opening, and means for forming a water-tightconnection between said communicating member and the wall of said firstnamed casing.

5. A water heater comprising a casing having an opening in its wall, anauxiliary casing carried by said first named casing and havingcommunication therewith through said opening, a water pipe connectioncommunicating with said auxiliary casing, a heating element mounted insaid first named. casing and having a communicating member projectinginto said opening, means for forming a water-tight connection betweensaid communicating member and the wall of said first named casing, andmeans for permitting the release of said water-tight connection and theremoval of said heating element from said first named casing while.

said water pipe connection remains-in connection with said auxiliarycasing.

6. A water heater comprising a casing having an opening in its wall witha seat around said opening, a heating coil having a part engaging saidseat around said openmg, a coupling sleeve engaging said part of saidheating coil and extending through said opening, packing materialengaging said sleeve within said opening, and means for compressing saidpacking material, said casin havingan extension provided with a chambercommunicating with said sleeve, and means detachably mounted on saidextension for permitting the detachment of said heating coil from saidcasing.

7. A water heater comprising a casing havin an opening in its wall witha seat aroun said opening, a heating coil having a part engagin saidseat aroun said opening, a coupling s eeve detachably engaging said partof said heating coil and extending through said opening, packingmaterial mounted within said opening, and means for compressing saidpacking material, said casin having an extension rovidedvwith a charm rcommunicating with said sleeve, and means mounted in the wall of saidextension for permitting the detachment of said heatin coil from saidcasing, and a water pipe aving communication with the chamber of saidcasing extension.

8. A water heater comprising a casing, an auxiliary casing carried bysaid first named casing and having communication therewith through anopemng, a water pi connection communicatnig with said auxiliiary casin aheating coil mounted in said first name casing, a header connected withsaid coil and located opposite said opening, a coupling member carriedby said header and projecting into said opening, means for forming awater-tight connection between said coupling member and the wall of saidcasin around said opening, and a plu detacha 1y engaging the wall ofsaid auxi iary casing opposite said last named means.

9. A water heater comprising a casing, an

packing material, and lugs auxiliary casing carried by said first namedcasing and havmg communication therewith through an opening, a waterpipe communicating with said auxiliary casing, a heating coil mounted insaid first-named casing a header connected with said coil and locatedopposite said opening, a coupling mounted in said opening and detachablyengaging said header, means for forming a watertight connection betweensaid coupling member and the. wall of said casing around said opening,and a plug detachably engaging the wall of said auxiliary casingopposite said last-named means.

10. A water heater comprising a casing having a plurality of openings inits walls, said casing having extensions provided with chamberscommunicating with said openings, water pipes communicating with thechambers of said extens1ons,'a heating coil located 1n said casing,means for circulatin heated water through said casing aroun said coil,headers connected with the opposite ends of said coil, said casinghaving a seat around each of said openings engaged by one'of saidheaders, a coupling sleeve threadedly engaging each of said headers andextending through one of said openings, packing material located aroundeach of said sleeves, said casing having annular seats inclined to theaxes of said coupling sleeves ,and engaged by said packing material,packing glands threadedly engaging the outer ends of said sleeves forcompressing said detachably engaging the extensions 0 said casingopposite said cou ling sleeves for permitting the removal of saidcoupling sleeves and said packing glands.

11. In a fluid heater, the combination of an outer casing having pipeconnections for includin the casing in a fluid system, means within tEecasing to provide a separate pas sage for fluid, and pi connectlons tothe casing to include said inner means in another fluid system, saidcasing having a removable cover, together with coupling elementsermitting removal of said inside means m said casing without disturbingany of said pipe connections to said casin and inside means comprising atubular 0011 provided with a head at each end thereof, said casin havingexternal hollow extensions for tfie said pipe connections by which thesaid inside means is included in said other fluid s stem, together withdevices for detachably olding' said heads in position within the casing.

12. In a fluid heater, the combination of an outer casing having pi econnections for including the casing in a uid system, means within thecasing to provide a separate passage for fluid, and pipe connections tothe casing to include said inner means in another fluid s'ystem, saidcasing having a removable cover, together with coupling elementspermitting removal of said inside means from said casing withoutdisturbing any of said pipeconnections to said casing, said couplingelements comprising upper and lower heads for said inside means, saidcasing having hollow extensions in communication with said heads,together with fastening devices detachably holdingsaid heads inposition, said hollow extensions being pro- Vided with saidlast-mentioned pipe connections to the casing.

In testimony whereof I have subscribed my name.

WALTER A. DALEY.

